He's referring to the efficiency, not the fact that there's two units.
At 1TH an SP10 pulls about 800W from the wall. That's about the best you can do with it, and that's closer to .8W/GH, not .58. If you run it at full tilt at 1.4TH you're pulling about 1300W from the wall, which is about .93W/GH.
What you're quoting are best case on chip numbers. That's like saying an S5 does .34W/GH because that's the best they can do with lower voltage not including any of the supporting hardware around it.
I agree with you but the specification I got them from the site of spoondolies, you can check, I will not fool anyone
Its because you say 1.4TH/s and 0.58W/GH right next to one another, you took 2 unrelated values(First from the ASIC spec at full speed, and second from the Chip's spec at minimum voltage) and put them side by side. You took the chip's best spec next to the machine full's speed, not the machine's spec.
You mixed information in a way that make you look dirty.
To get even near to 0.58W/GH you would need to lose close to half the hashrate or vis versa, if you want 1.4TH/s you get nearly half the efficiency.